News
Regulation, field practice and tools: our analysis to help renovation professionals sell and deliver energy retrofits.

On a half-timbered house, you play a fine balancing act between comfort, moisture and respect for the building. Your insulation and heating choices must let the walls breathe, otherwise problems show up fast, and your client sees it… and feels it. With a simple method and the right materials, you gain performance without erasing the character.
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On a flat roof, everything happens above the slab. An external solution gains you performance without cutting into ceiling height, provided you get the layers and details right in sequence. As a tradesperson, this is where you make the difference between a stress-free job and costly rework.
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When temperatures swing up and down, your jobs shouldn't. By relying on a simple climate indicator, you can compare two winters, objectify consumption gaps and justify insulation or heating sizing with more confidence. The result: sturdier quotes, and fewer pointless arguments once the job is delivered.
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When a client complains about odours, dust or humidity, you need to decide quickly between air treatment and ventilating the home. The two can work together, but they don't address the same causes, or in the same rooms. Asking the right questions at the site visit saves you time, and lets you propose a solution that holds up over the long run.
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On a renovation quote, the right figure in the right place can make all the difference. Understanding how a home's consumption translates into the equivalent used by calculation methods helps you explain your choices, size correctly, and avoid endless discussions. In short, you keep control of the announced performance, and of the client's trust.
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In a 1970s co-ownership, you often juggle facades that need treatment, aging utilities and decisions made by many voices. Your value is framing the project with a clear diagnosis, well-coordinated trades and a phasing that limits surprises and complaints. With the right method, you turn a heavy project into a readable action plan that pays off for the whole building.
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A poorly treated rafter, and the whole loft's performance collapses. On site, you're working three very concrete levers: continuity of the layer, careful airtightness, and moisture management without traps. With the right method, you save time during installation and limit callbacks for discomfort or condensation.
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A single socket can undo part of the insulation work if air passes behind the box. By choosing the right back boxes and taking care with installation, you secure the job's result and avoid finish rework that eats up time. The idea is simple: treat one critical point properly, and the comfort is felt right away.
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Between what clients call "living area" and what you actually heat, there are often a few square metres of difference. And that gap can change a heat pump's sizing, the choice of emitters, or the cost of insulation. By setting the right calculation method right from the quote, you secure performance, budget, and avoid arguments at the end of the job.
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On a job site, unconverted lofts are often the best lever for quick gains in comfort and a lower heating bill, without transforming the whole house. In a few hours, you can treat a zone that leaks a lot of heat and deliver a result the client sees immediately. With the right materials and clean execution, you secure long-term performance and showcase your expertise right from sign-off.
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On a job site, everything often comes down to one simple detail: an insulator's ability to slow the passage of heat. When you compare two products, this criterion helps you aim for the right performance level without extra thickness or bad surprises. With a few concrete benchmarks, you can justify your choices, secure your quotes, and offer your clients insulation that delivers, winter and summer alike.
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On your projects, pairing one solution for heating with another dedicated to hot water can change the game. You gain in comfort, consistency and efficiency, while limiting failures that shut down the whole home's comfort. The payoff is an installation that's clearer for the client and simpler for you to adjust and repair.
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